Aging and CMV Infection Affect Pre-existing SARS-CoV-2-Reactive CD8(+) T Cells in Unexposed Individuals.
Aging and CMV Infection Affect Pre-existing SARS-CoV-2-Reactive CD8(+) T Cells in Unexposed Individuals.
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DOI:
10.3389/fragi.2021.719342
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发表时间:
2021
影响因子:
--
通讯作者:
Hamazaki, Yoko
中科院分区:
文献类型:
--
作者:
Jo, Norihide;Zhang, Rui;Ueno, Hideki;Yamamoto, Takuya;Weiskopf, Daniela;Nagao, Miki;Yamanaka, Shinya;Hamazaki, Yoko
关键词:
Age is a major risk factor for COVID-19 severity, and T cells play a central role in anti-SARS-CoV-2 immunity. Because SARS-CoV-2-cross-reactive T cells have been detected in unexposed individuals, we investigated the age-related differences in pre-existing SARS-CoV-2-reactive T cells. SARS-CoV-2-reactive CD4+ T cells from young and elderly individuals were mainly detected in the central memory fraction and exhibited similar functionalities and numbers. Naïve-phenotype SARS-CoV-2-reactive CD8+ T cell populations decreased markedly in the elderly, while those with terminally differentiated and senescent phenotypes increased. Furthermore, senescent SARS-CoV-2-reactive CD8+ T cell populations were higher in cytomegalovirus seropositive young individuals compared to seronegative ones. Our findings suggest that age-related differences in pre-existing SARS-CoV-2-reactive CD8+ T cells may explain the poor outcomes in elderly patients and that cytomegalovirus infection is a potential factor affecting CD8+ T cell immunity against SARS-CoV-2. Thus, this study provides insights for developing effective therapeutic and vaccination strategies for the elderly.
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DOI:
10.1038/s41577-019-0180-1
发表时间:
2019-09
期刊:
Nature reviews. Immunology
影响因子:
--
作者:
Goronzy JJ;Weyand CM
通讯作者:
Weyand CM
影响因子:
168.9
作者:
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通讯作者:
Cao, Bin
影响因子:
16.6
作者:
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通讯作者:
Snyder-Cappione, Jennifer E.
影响因子:
100.3
作者:
Chen, Zeyu;John Wherry, E.
通讯作者:
John Wherry, E.
影响因子:
17.1
作者:
Furman D;Jojic V;Sharma S;Shen-Orr SS;Angel CJ;Onengut-Gumuscu S;Kidd BA;Maecker HT;Concannon P;Dekker CL;Thomas PG;Davis MM
通讯作者:
Davis MM